asyncio questions

[Dieter Maurer]

Frank Millman wrote at 2023-1-26 12:12 +0200:
>I have written a simple HTTP server using asyncio. It works, but I don't
>always understand how it works, so I was pleased that Python 3.11
>introduced some new high-level concepts that hide the gory details. I
>want to refactor my code to use these concepts, but I am not finding it
>easy.
>
>In simple terms my main loop looked like this -
>
>     loop = asyncio.get_event_loop()
>     server = loop.run_until_complete(
>         asyncio.start_server(handle_client, host, port))
>     loop.run_until_complete(setup_companies())
>     session_check = asyncio.ensure_future(
>         check_sessions())  # start background task
>     print('Press Ctrl+C to stop')
>     try:
>         loop.run_forever()
>     except KeyboardInterrupt:
>         print()
>     finally:
>         session_check.cancel()  # tell session_check to stop running
>         loop.run_until_complete(asyncio.wait([session_check]))
>         server.close()
>         loop.stop()

Why does your code uses several `loop.run*` calls?

In fact, I would define a single coroutine and run that
with `asyncio.run`.
This way, the coroutine can use all `asyncio` features,
including `loop.create_task`.